First polls closing at

6:00 p.m. EST

What we're watching for

House 15 races

Kentucky's 6th District features one of the marquee House races of the night. If Democrat Amy McGrath, a former Marine fighter pilot, manages to unseat GOP Rep. Andy Barr after the polls close at this early hour, it could presage a strong Democratic night. But if Barr wins by a comfortable margin, Republicans will feel better about their chances to retain a narrow majority.

Resultsfor these states

3 Dem12 GOP

Senate 1 race

Polls close at 6 p.m. ET in most of Indiana, home to a toss-up Senate race. Sen. Joe Donnelly is the third-most-vulnerable Democratic incumbent on the map -- if Republican Mike Braun wins here, it could dampen Democrats' hopes of winning the majority in the chamber.

Resultsfor these states

0 Dem1 GOP

Governor 0 races

There are no governor's races at this hour.

First polls closing at

7:00 p.m. EST

What we're watching for

House 69 races

The top House races closing at 7 p.m. are in Florida and Virginia. Two are probable Democratic pickups: one in Miami (FL-27), and one in Northern Virginia (VA-10). But there's another toss-up race in South Florida (FL-26), and two more in Virginia (VA-02, -07). Those three will be more early barometers for the battle for the House.

Predictionsfor uncalled races

Solid Dem. →Toss-ups← Solid GOP

---11--

Resultsfor these states so far

30 Dem37 GOP

Senate 3 races

The rest of Indiana closes at 7 p.m. ET, as does most of Florida, where Democratic Sen. Bill Nelson and GOP Gov. Rick Scott are locked in perhaps the closest -- and certainly the most expensive -- Senate race of 2018.

Predictionsfor uncalled races

Solid Dem. →Toss-ups← Solid GOP

---1---

Resultsfor these states so far

2 Dem0 GOP

Governor 6 races

The race to succeed Scott as Florida governor is also neck-and-neck -- as is the contest just to the north in Georgia. Both Democratic candidates -- Andrew Gillum in Florida and Stacey Abrams in Georgia -- would be the first African-American governors of their respective states. In Georgia, if neither Abrams nor Republican Brian Kemp wins a majority of the vote on Tuesday -- a possibility given the closeness of the race and the presence of a Libertarian candidate on the ballot -- the two will meet in a December 4 runoff.

Predictionsfor uncalled races

Solid Dem. →Toss-ups← Solid GOP

---1---

Resultsfor these states so far

0 Dem5 GOP

First polls closing at

7:30 p.m. EST

What we're watching for

House 32 races

More key battleground House races close at 7:30 -- mostly in red territory. There are three competitive House races in North Carolina, including the barn-burner in the state's 9th District, which the GOP is fighting to protect after Rep. Robert Pittenger was defeated in a primary. In Ohio's 12th District, GOP Rep. Troy Balderson and Democrat Danny O'Connor are staging a rematch of the August special election, which Balderson won by a single percentage point.

Predictionsfor uncalled races

Solid Dem. →Toss-ups← Solid GOP

---1---

Resultsfor these states so far

7 Dem24 GOP

Senate 2 races

Sen. Joe Manchin -- a Democrat seeking reelection in a state President Trump carried by 42 percentage points -- has defied the odds and maintained a lead over Republican Patrick Morrisey throughout the campaign. Can Manchin hold on to win another six-year term?

Resultsfor these states

2 Dem0 GOP

Governor 1 race

Ohio's gubernatorial race is one of the biggest prizes of the night. GOP state Attorney General Mike DeWine faces Democrat Richard Cordray, whom he unseated as AG back in 2010. Cordray later seved as Consumer Financial Protection Bureau chief and has brought the architect of that agency, Sen. Elizabeth Warren (D-Mass.), to the state to campaign with him.

Resultsfor these states

0 Dem1 GOP

First polls closing at

8:00 p.m. EST

What we're watching for

House 156 races

Polls close in more than a dozen states at 8 p.m. ET, but no state is more critical to the battle for the House than Pennsylvania. A new, court-ordered congressional map undid Republicans' gerrymandered districts earlier this year, and Democrats can pick up between three and six seats on Tuesday -- potentially a large chunk of the 23 they need to win back the majority.

Predictionsfor uncalled races

Solid Dem. →Toss-ups← Solid GOP

--111--

Resultsfor these states so far

84 Dem69 GOP

Senate 15 races

Republicans hope to unseat Missouri Sen. Claire McCaskill on Tuesday. Even if the GOP hasn't picked up a seat earlier in the night, the party can essentially lock down the Senate majority if GOP state Attorney General Josh Hawley beats McCaskill. Democrats, meanwhile, are banking on popular former Gov. Phil Bredesen to steal an open seat in bright-red Tennessee, though most pre-election polls have GOP Rep. Marsha Blackburn in the lead there.

Predictionsfor uncalled races

Solid Dem. →Toss-ups← Solid GOP

-----1-

Resultsfor these states so far

9 Dem5 GOP

Governor 12 races

Democrat J.B. Pritzker is poised to oust Illinois GOP Gov. Bruce Rauner on Tuesday in the nation's most-expensive gubernatorial election in history. Nearly $300 million will end up being spent in the contest -- more than half from the billionaire Pritzker's own wallet. Democrats are also likely to win the governorship in Michigan, where former state Sen. Gretchen Whitmer leads GOP state Attorney General Bill Schuette in the polls.

Resultsfor these states

First polls closing at

9:00 p.m. EST

What we're watching for

House 73 races

Minnesota is a microcosm of the nation's political realignment. Democrats are favored to knock off two GOP incumbents in the Twin Cities suburbs -- Reps. Erik Paulsen and Jason Lewis. But Republicans' best chances to pick up seats nationwide are in two open-seat races here: one on the Iron Range, and another, rural seat in southern Minnesota.

Predictionsfor uncalled races

Solid Dem. →Toss-ups← Solid GOP

--11---

Resultsfor these states so far

40 Dem31 GOP

Senate 8 races

While most polls close in Texas at 8 p.m. ET, the far western corner around El Paso is in the Mountain Time Zone and stays open an hour later. That's the geographic base of Democratic Rep. Beto O'Rourke, who has raised a staggering $70 million in his bid to unseat GOP Sen. Ted Cruz. Polls also close in the neck-and-neck Arizona race between two members of Congress: Democrat Kyrsten Sinema and Republican Martha McSally.

Predictionsfor uncalled races

Solid Dem. →Toss-ups← Solid GOP

---1---

Resultsfor these states so far

5 Dem2 GOP

Governor 9 races

Wisconsin GOP Gov. Scott Walker is in the fight of his political life against Democrat Tony Evers. Walker -- who is running in his fifth political race in the past eight years -- was tied with Evers in the final poll of the campaign.

Resultsfor these states

5 Dem4 GOP

First polls closing at

10:00 p.m. EST

What we're watching for

House 15 races

Republicans currently hold three of Iowa's four congressional districts, but that dominance is threatened on Tuesday. Democrats are favored to oust GOP Rep. Rod Blum in Eastern Iowa, and they have GOP Rep. David Young on the ropes in the southwestern corner of the state. The party is also making a late move on controversial GOP Rep. Steve King, amid recent scrutiny of King's ethnocentric and anti-immigration stances.

Predictionsfor uncalled races

Solid Dem. →Toss-ups← Solid GOP

---1---

Resultsfor these states so far

6 Dem8 GOP

Senate 3 races

Polls close statewide in Nevada, home to the only GOP senator seeking reelection in a state Hillary Clinton won in 2016: Dean Heller. Heller is running neck-and-neck in the polls with Democratic Rep. Jacky Rosen. Meanwhile, Republicans have targeted Democratic Sen. Jon Tester for defeat in Montana.

Resultsfor these states

2 Dem1 GOP

Governor 3 races

The gubernatorial races in Iowa and Nevada are extremely tight in the final days of the campaign. The winning candidates could play roles in the 2020 presidential race: Both states hold early presidential nominating contests, and both are swing states in the general election.

Resultsfor these states

1 Dem2 GOP

First polls closing at

11:00 p.m. EST

What we're watching for

House 70 races

Democrats could pick up as many as a half-dozen House seats in California -- most in Southern California, where Republicans are defending five districts Clinton carried in the presidential race. But because mail ballots can be postmarked as late as Tuesday, it could be weeks before some of the closest races are decided.

Predictionsfor uncalled races

Solid Dem. →Toss-ups← Solid GOP

--341--

Resultsfor these states so far

51 Dem11 GOP

Senate 3 races

Party control of California's Senate seat isn't up for grabs. Because of the state's top-two primary system, both candidates are Democrats: 85-year-old Sen. Dianne Feinstein, and her 51-year-old, liberal challenger, state Sen. Kevin de Leon.

Governor 3 races

Resultsfor these states

First polls closing at

12:00 a.m. EST

What we're watching for

House 1 race

Alaska GOP Rep. Don Young -- first elected in a 1973 special election -- is the dean of the House. But Young, 85, is locked in a surprisingly close race with Alyse Galvin, who won the Democratic primary but declined the ballot line and is running as an independent. Congressional Leadership Fund, the leading pro-GOP House super PAC, launched an 11th-hour field operation to boost Young in the final days of the race.

Resultsfor these states

0 Dem1 GOP

Senate 0 races

There is no Senate race in Alaska this year.

Governor 1 race

Trailing in the polls, independent Gov. Bill Walker suspended his campaign last month, though he'll still be on the ballot. Walker endorsed former Democratic Sen. Mark Begich in the race against Republican Mike Dunleavy.